Table 1 Etiology of the efusions included in the study

Malignant

122

103

19

 Lung cancer

46

40

6

 CUP

18

16

2

 Mesothelioma

15

12

3

 Breast cancer

13

12

1

 Lymphoma

9

4

5

 Bladder cancer

5

5

0

 Ovarian cancer/PSPC^a

3

3

0

 Stomach cancer

3

3

0

 Cholangiocarcinoma

2

0

2

 Colon cancer

2

2

0

 Cervix cancer

1

1

0

 Endometrium cancer

1

1

0

 Hypernephroma

1

1

0

 Melanoma

1

1

0

 Multiple myeloma

1

1

0

 Pancreas cancer

1

1

0

Cardiogenic

69

56

13

Empyema

11

1

10

Parapneumonic non complicated

26

25

1

 complicated

14

2

12

Pneumonitis

10

5

5

Tuberculous

13

0

13

Paramalignant

34

29

5

Viral

10

8

2

Post traumatic

6

6

0

Others:

Pulmonary Embolism, Pericarditis, Cirrhotic, nephrotic syndrome, uremia, Rheumatoid arthritis etc.

87

71

16

All

402

306

96